[INFO] crate syphon 0.1.0 is already in cache
[INFO] testing syphon-0.1.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate syphon 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate syphon 0.1.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate syphon 0.1.0
[INFO] finished tweaking crates.io crate syphon 0.1.0
[INFO] tweaked toml for crates.io crate syphon 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate syphon 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4048f9a7280ffdad41570e0cc6107002c4efa7eeff3e9ba2ef96db07bda751ee
[INFO] running `"docker" "start" "-a" "4048f9a7280ffdad41570e0cc6107002c4efa7eeff3e9ba2ef96db07bda751ee"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling arc-swap v0.4.5
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling snap v1.0.0
[INFO] [stderr]    Compiling tracing-core v0.1.10
[INFO] [stderr]    Compiling futures-channel v0.3.4
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling petgraph v0.5.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]    Compiling stderrlog v0.4.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling named_tuple v0.1.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.27
[INFO] [stderr]    Compiling async-stream v0.2.1
[INFO] [stderr]    Compiling tokio v0.2.13
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling tracing v0.1.13
[INFO] [stderr]    Compiling pin-project v0.4.8
[INFO] [stderr]    Compiling tower-discover v0.3.0
[INFO] [stderr]    Compiling tower-load-shed v0.3.0
[INFO] [stderr]    Compiling tracing-futures v0.2.3
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]    Compiling tower-util v0.3.1
[INFO] [stderr]    Compiling futures-executor v0.3.4
[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling tonic-build v0.2.0
[INFO] [stderr]    Compiling tower-load v0.3.0
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tower-buffer v0.3.0
[INFO] [stderr]    Compiling tower-make v0.3.0
[INFO] [stderr]    Compiling tower-retry v0.3.0
[INFO] [stderr]    Compiling tower-timeout v0.3.0
[INFO] [stderr]    Compiling tower-ready-cache v0.3.1
[INFO] [stderr]    Compiling tower-limit v0.3.1
[INFO] [stderr]    Compiling tower-balance v0.3.0
[INFO] [stderr]    Compiling h2 v0.2.4
[INFO] [stderr]    Compiling tower v0.3.1
[INFO] [stderr]    Compiling syphon v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `syphon v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/syphon-abf94d659049d743/build-script-build` (exit code: 1)
[INFO] [stderr] --- stderr
[INFO] [stderr] error: 'rustfmt' is not installed for the toolchain '1.44.0-x86_64-unknown-linux-gnu'
[INFO] [stderr] To install, run `rustup component add rustfmt --toolchain 1.44.0-x86_64-unknown-linux-gnu`
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4048f9a7280ffdad41570e0cc6107002c4efa7eeff3e9ba2ef96db07bda751ee"`
[INFO] running `"docker" "rm" "-f" "4048f9a7280ffdad41570e0cc6107002c4efa7eeff3e9ba2ef96db07bda751ee"`
[INFO] [stdout] 4048f9a7280ffdad41570e0cc6107002c4efa7eeff3e9ba2ef96db07bda751ee